<template>
  <div style="width: 100%">
    <el-tooltip
      class="item"
      effect="dark"
      :disabled="isShowTooltip"
      :content="content"
      placement="top"
    >
      <p class="over-flow" :class="className" @mouseover="onMouseOver(refName)">
        <span :ref="refName">{{ content || "-" }}</span>
      </p>
    </el-tooltip>
  </div>
</template>

<script>
export default {
  name: "textTooltip",
  props: {
    // 显示的文字内容
    content: {
      type: String,
      default: () => {
        return "";
      },
    },
    // 外层框的样式，在传入的这个类名中设置文字显示的宽度
    className: {
      type: String,
      default: () => {
        return "";
      },
    },
    // 为页面文字标识（如在同一页面中调用多次组件，此参数不可重复）
    refName: {
      type: String,
      default: () => {
        return "";
      },
    },
    clamp: {
      type: Number,
      default: () => {
        return 0;
      },
    },
  },
  data() {
    return {
      isShowTooltip: true,
    };
  },
  methods: {
    onMouseOver(str) {
      let parentWidth = this.$refs[str].parentNode.offsetWidth;
      let contentWidth = this.$refs[str].offsetWidth;
      // 判断是否开启tooltip功能
      if (contentWidth > parentWidth) {
        this.isShowTooltip = false;
      } else {
        this.isShowTooltip = true;
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.over-flow {
  margin: 0 !important;
  line-height: 1;
  text-overflow: ellipsis;
  overflow: hidden;
  word-break: break-all;
  white-space: nowrap;
}
.double-line {
  word-break: break-all;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
</style>
